1. Ace Lighting informed its regional sales managers that any sales manager that doubled its region's sales of lighting products year-over-year would receive a bonus of 200% of his/her annual salary. That was in March. Manager Sue Bahr was earning 42k a year and she achieved the sales goal in November. The company sent out a memo in early December saying its ability to pay the bonuses might be impaired by poor cash-flow.Bahr expected a bonus of 42k; the company paid her only 18k as a bonus.

Which is true?

a.no breach of contract because the offer was too vague

b.no breach of contract because it was not possible to give the full bonus

c.this was a unilateral contract that Bahr accepted by making the required sales numbers; Ace breached it

d.there was no contract because Ace revoked the offer